How many representatives does each state have in the House of Representatives? How is this number determined?

The answer is they have two senators to represent each state however a states representation is based on the states population. Small states such as Vermont and Delaware have one representative while bigger states like california have 53.

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes

protected civil liberties and outlawed slavery in the new territories.